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KOYO / Matched pair / back-to-back / with machined cage

KOYO 7248BDB FY

Angular contact ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
240 mm
Outside diameterD
440 mm
WidthB
144 mm
Dynamic load ratingC
736 kN
Static load ratingC0
1080 kN
Limiting speednG
890 r/min

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications9 parameters
Core specifications
ParameterSymbolValue
Variant / constructionMatched pair / Back-to-back / With machined cage
Bore diameterd240 mm
Outside diameterD440 mm
WidthB144 mm
Basic dynamic load ratingC736 kN
Basic static load ratingC01080 kN
Fatigue load limitPu30.2 kN
Limiting speednG890 r/min
Mass≈m106 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key020-020-010
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathAngular contact ball bearings - Matched pair - Back-to-back - With machined cage
Official Classification 1Angular contact ball bearings / Matched pair / Back-to-back / With machined cage
Technical Data16 parameters
Technical Data
ParameterSymbolValue
d240 mm
D440 mm
B144 mm
R(Min.)4 mm
R1(Min.)1.5 mm
Basic Load Ratings : Cr736 kN
Basic Load Ratings : C0R1080 kN
Fatigue Load Limit : Cu30.2 kN
Limiting Speeds(Grease Lub.)890 min-1
Limiting Speeds(Oil Lub.)1200 min-1
Load Center Spread : A357.3 mm
Da(Min.)258 mm
Db(Max.)431.5 mm
Ra(Max.)3 mm
Rb(Max.)1.5 mm
Mass(Refer.)106 kg

Technical documents & data sheet

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Record identity
KOYO 7248BDB FY
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